专第利信息

一种不溶性硫磺的生产方法,一种制备硫氢化钠的方法,由工业碳制取高纯碳的方法,以凹凸棒石粘土为原料合成X型沸石的方法,阳极泥预处理及回收稀散金属的方法,     

孕酮检测技术分析

建立脂肪中醋酸美仑孕酮、醋酸甲地孕酮和醋酸氯地孕酮残留量的测定方法。方法色谱柱：Kromasil C18（250mm×4.6mm,5μm）;流动相：乙腈-水（65：35）;流速：1.0ml/min;柱温：35℃;检测波长：292nm;进样量：40μl。结果样品的室内加标平均回收率为86.7%～91.8%,室内相对标准偏差为4.5%～6.0%,室间加标平均回收率为81.4%～95.0%,室间相对标准偏差3.7%～7.1%,定量测定低限（LOQ）为10μg/kg。结论本方法简便,准确,可用于脂肪中醋酸美仑孕酮、醋酸甲地孕酮和醋酸氯地孕酮残留含量的测定。     

全面创新改革试验政策对科技成果转化的影响效应

以广东、安徽和四川全面创新改革试验区为研究对象,运用合成控制法,构造合成粤皖川、合成广东、合成安徽、合成四川,通过对比真实试验区技术市场成交额实际值与合成试验区技术市场成交额的反事实估计值,探讨全面创新改革试验政策对试验区科技成果转化的总体效应和个体效应。研究结果表明：全面创新改革试验政策总体上显著促进试验区省份科技成果转化,其中,全面创新改革试验政策对广东、四川科技成果转化具有显著促进效应,而对安徽科技成果转化的效应不显著;政策效应在政策实施当年即已显现,两年后明显增强;科技经费投入、经济规模、技术成熟度、人口集聚、产业结构、创新能力等因素对科技成果转化具有显著影响。     

高分子合成技术及其在纺织领域的应用

高分子合成技术与高分子科学 高分子合成是高分子科学的基础,合成不同链结构的聚合物将有不同的性能,因而高分子合成(高分子化学)、高分子结构与性能(高分子物理)及高分子应用(高分子加工)三部分构成今日的高分子学科.在21世纪,高分子科学与生命、材料、环保等方面有紧密的相互联系.化学学科仍将处于中心的地位.     

中国商品市场的合成指数分析

利用增长循环对我国商品市场进行景气分析,通过选取1999～2006年间与商品市场密切相关的重要经济指标,如工业增加值、进口总额、原材料购进价格指数和商品零售价格指数等,用美国商务部编制的方法将其合成为商品市场经济景气指数,以此作为观测不同类型商品市场波动的综合尺度,最后结合实际经济形势进行了合成指数分析,并提出了相关的政策建议.     

SnS2纳米颗粒/MXene复合材料的制备及其储锂性能

SnS2因理论储锂容量高,被认为是锂离子电池颇具应用潜力的负极材料之一,但其循环稳定性和倍率性能差.通过原位限域溶剂热法制备了SnS2 NPs@MXene,即SnS2纳米颗粒/MXene复合材料,其中SnS2纳米颗粒均匀地嵌在MXene层间,呈三明治结构.SnS2 NPs夹在MXene层间有利于抑制MXene的堆垛,同...     

二甘醇葡萄糖苷硬脂酸酯的合成新工艺

二甘醇葡萄糖苷与硬脂酸直接进行反应，由于它们的物理性质存在很大差异，不能均匀混合，导致非均相反应发生，直接影响到产物的生成和反应物的转化率。要解决该问题使用溶剂是途径之一，但使用溶剂不可避免地会涉及到溶剂的回收和残留问题，会增加生产成本，也对产品的应用不利，现介绍采用无溶剂条件下，以硬脂酸钠作催化剂，利用二甘醇葡萄糖苷与硬脂酸直接酯化合成二甘醇葡萄糖苷硬脂酸酯新工艺，转化率可达95％。     

The Way of the Social and Economic Development of China An Attempt of Historical and Synthetic Representation

The issue of social and economic development is an important part of theoretical and empirical research of the contemporary economy. China is an example of an economy which in a short period of time achieved success within this scope. Therefore it seems to be justified to draw the reader＇s attention to the factors and determinants which may be regarded as the key ones for the economy of China, both in the period of 1949-1978, namely, in the period of real socialism, and in the period after 1978, so-called ＂socialist market economy＂ to date. On the basis of an analysis of Polish and foreign reference sources and source materials, the author tried to trace both similarities and differences in China＇s economic development over those two periods, first of all paying attention to the Chinese authorities＇ pragmatism of governing in the other period, accompanied by limiting ideological influences. Maintaining the socialist system, in that period China worked out its own, specific principles, and rules of internal activities and activities in the international arena, which enabled to it the creation of a model, especially for developing countries, the system of economic planning and programming, its constant modernization during the implementation of economic tasks, with the consideration given to changing conditionings in the world economy. It was pointed out that with maintaining the laboriousness of the Chinese and their loyalty to authority, they make up China＇s economic power. The aim of the article is to pay special attention to the circumstances, phenomena, conditionings, and factors which occurred on the way to the social and economic development of China, which enabled it to achieve the economic success in a relatively short period of time. This success can be expressed by such indicators as for instance the poverty rate, the unemployment rate, gross domestic product, the value of export, and the value of foreign direct investment as well as other factors.